9... f7e6 This capture is necessary, since it's not easy to defend the d6-pawn after 10. c1f4 Forcing Black to advance the pawn to e5 in order to protect d6. 10... e6e5  11. f4g5 The knight now goes to d5, gaining a tempo by attacking the queen. White's position is comfortable and easier to play, although the advantage is not as big as I thought. 11... b8c6 The right move, preparing to take the knight to d4.